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A Practical Guide to Haemostasis


Atrial Fibrillation and Ischaemic Stroke:
The ATRIA Score

Introduction:

The ATRIA score was developed to generate a stroke risk prediction model for individuals with Atrial Fibrillation [AF].  It is used to guide whether an individual patient with AF may benefit from anticoagulation to reduce their risk of stroke.

The risk prediction model differs significantly for age depending upon whether a particular patient has a history of stroke or not and this is engineered into the algorithm.

The ATRIA Score:


Select Criteria:

Previous Stroke
Yes
No
Age
[Note: The Hazard ratios for age [and hence the scores] are different if the patient has had a previous stroke]
<65 years
8 points if previous stroke
0 points if no history of stroke
65-74 years
7 points if previous stroke
3 points if no history of stroke
75-84 years
7 points if previous stroke
5 points if no history of stroke
≥85 years 
9 points if previous stroke
6 points if no history of stroke
Female
Yes 1 Point
No 0 Points
Diabetes Mellitus
Yes 1 Point
No 0 Points
Chronic Heart Failure
Yes 1 Point
No 0 Points
Hypertension
Yes 1 Point
No 0 Points
Proteinuria
Yes 1 Point
No 0 Points
eGFR <45mL/min or End Stage Renal Disease [ESRD]
Yes 1 Point
No 0 Points

Score


[ Max score 15 points]

Interpretation
0 - 5 points Low Risk:            Annual risk of recurrence 0.65%
6 points Moderate Risk:  Annual risk of recurrence 1.91%
7 - 15 points High Risk:           Annual risk of recurrence 3.89%


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